People started moving towards the South in the second half of the 20th century mostly for economic reasons. Southern states had cheaper standards of living and you could find a home easier and a job. The expenses were not as high as they were in the northern countries, mostly those in the north eastern part of the US.
Community policing arose out of the need to better connect with minority groups following and during the Civil Rights Movement. The movement had shown police to be hostile, violent, and obstructive in the methods. In response to this, police forces deemed it better to work with and learn from the communities instead of using force due to lack of understanding. This program eventually evolved into cultural learning programs in which multicultural education became a priority.
Yes, it would never hurt for a country to be more powerful and stronger /more protected